The aim of this paper is to compare data from longitudinal study of psycho-physiological and psychological characteristics
of cosmonauts’ sleep during pre-starts periods, space flights and both immediately after space flights as well as within time delay.
Stoilova I.M. and Jordanova M.M. 2005. Sleep in Microgravity. Proceedings of the 2nd International Conference on "Recent Advances in Space Technologies" in Istanbul, Turkey. 743-747